Improvement in reflectors for locomotive head-lights



UNITED STATES PATENT l OEEICE.

CHARLES S. LEE AND WILLIAM M. BALDVIN, OF TROY, NEW YORK.

IMPROVEMENT IN REFLECTORS FOR LOCOMOTIVE HEAD-LIGHTS.

Specification forming part of Letters Patent No. 117,089, dated July 18,1871.

To all 'whom it may concern:

Be it known' that we, CHARLES S. LEE and WILLIAM M. BALDWIN, of Troy, inthe county of Rensselaer and State of New York, have invented a new anduseful Improvement in Beectors for Locomotive Head-Lights and otherpurposes of ilhunination 5 and we do hereby declare that the followingis a full, clear, and eX- act description thereof, which will enableothers skilled in the art to make and use the same, reference being hadto the accompanying drawing forming part of this specication.

Figure lis a side sectional elevation of our improvement through theline x w in Fig. 2. Fig. 2 is a front or plan view of the same.

Similar letters of reference indicate corresponding parts..

Our invention relates generally to locomotive head-lights, butparticularly to the reflecting-surfaces by which the light isintensified. The object in-all such cases is to emit as many rays aspossible in a direction parallel to the axis of said reiiector and at ashort distance therefrom. I/Ve have approximated much more nearly thanusual to a perfect attainment of this object by an im.- provedcombination of reiiectors, as hereinafter fully described andsubsequently specified in the claim.

In the drawing, A represents one of our imv proved locomotive head-lightretlectors, supported on a stand, B, as shown. The walls or retlect- Ying-surfaces d c are made and arranged in reference to each other, asshown in Fig. 1, so that the rays rom the lamp, which is to be of the0rdinary kind, its flame placed at F, will strike against thereflectingsurface d and be reflected to the surface c, thence outwardhorizontally to the light, being thus reflected twice. Referring to Fig.1, it will be observed that the rays of light a b strike, respectively,at *l *2 on the reliectingsurface d, are reiiected thence to *i* *4 011the reiiecting-surface c, thence outward on the line a/ b', the raysbeing thus twice reiiected. Within the reiiector A is a secondary andsmaller relector, C, open at its back, as shown, and secured to thereiiector A by rods D. The rays c fall upon the interior surface of thereiiector C at *5 and pass out on the lines c', as shown.

By the use of these improvements we produce a locomotive head-lighthaving greatly-increased intensity and brilliancy. Our improvements maybe adapted to various purposes of illumination.

Ve do not limit or confine ourselves to thel form of any of the partsherein shown and described, as they may be varied without departing fromour invention.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent- In combination with an outer reiiector, A,that receives and reiiects once or twice, according' to their Obliquity,all the rays on one side of the lamp, the inner reiiector C, whichallows the horizontal rays onthe other side to pass therethrough, butalso reflects the oblique ones horizontally into the same pencil ofrays, as and for the purpose specified.

CHARLES S. LEE. WILLIAM M. BALDWIN.

Witnesses WM. A. NUMAN, E. WoosTER.

